Please provide steps to reproduce the error.
*view https://countryhumans.wikioasis.org/sitemap.xml
*view https://countryhumans.wikioasis.org/sitemaps/countryhumanswiki/sitemap-countryhumanswiki-NS_0-0.xml
etc.

What happened that shouldn't have?
Sitemap no exist after WikOasis upgrade to 1.45

What should have happened?
https://countryhumans.wikioasis.org/wiki/Special:Version
etc.